package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.Collections;
import java.util.List;

@Slf4j
@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /*新增菜品分类*/
    @Override
    public void add(CategoryDTO   categoryDTO) {
        Category category = new Category();

        BeanUtils.copyProperties(categoryDTO,category);

        //分类状态默认为禁用状态
        category.setStatus(StatusConstant.DISABLE);

        /*category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());
*/
        categoryMapper.insert(category);

    }

    /*分类分页查询*/
    @Override
    public PageResult select(CategoryPageQueryDTO categoryPageQueryDTO) {
        //开启分页查新
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());

        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }
    /*删除分类*/

    public void delete(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.delete(id);
    }

    /*修改分类*/
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();

        BeanUtils.copyProperties(categoryDTO,category);


       /* category.setUpdateTime(LocalDateTime.now());
        category.setUpdateUser(BaseContext.getCurrentId());*/

        categoryMapper.update(category);
    }
    /*
    * 启用禁用状态*/
    @Override
    public void updateStatus(Integer status, Long id) {
        Category category = Category.builder()
                .id(id).
                status(status)
                /*.updateTime(LocalDateTime.now()).
                updateUser(BaseContext.getCurrentId())*/
                .build();

        categoryMapper.update(category);
    }

    /*分类查询*/
    @Override
    public List<Category> list(Integer type) {

        return categoryMapper.list(type);
    }
}
